E. A. Moguchikh, A. A. Alekseenko, I. V. Pankov, D. V. Alekseenko, V. E. Guterman
{"title":"Changes in the Microstructure and Electrochemical Behavior of Pt/C Electrocatalysts under Various Stress Testing Conditions","authors":"E. A. Moguchikh, A. A. Alekseenko, I. V. Pankov, D. V. Alekseenko, V. E. Guterman","doi":"10.1134/S2635167624600081","DOIUrl":null,"url":null,"abstract":"<p>A comparative analysis of the microstructure and electrochemical behavior of platinum–carbon electrocatalysts containing 20 and 40% platinum from different manufacturers for fuel cells with a proton-exchange membrane is carried out. The degree of degradation of the catalysts during accelerated stress testing in laboratory conditions is assessed based on the results of not only residual functional characteristics, but also microstructural parameters after electrochemical tests. It is determined that 20 and 40% PM series catalysts contain smaller platinum nanoparticles, characterized by a narrower size and more uniform spatial distribution, compared to analogues of the HiSPEC series. Due to these microstructural features, a PM-series platinum–carbon catalysts are characterized by a higher electrochemically active surface area (EASA) and mass activity values initially and after stress testing.</p>","PeriodicalId":716,"journal":{"name":"Nanotechnologies in Russia","volume":"18 2 supplement","pages":"S301 - S315"},"PeriodicalIF":0.8000,"publicationDate":"2024-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nanotechnologies in Russia","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1134/S2635167624600081","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Engineering","Score":null,"Total":0}
引用次数: 0
Abstract
A comparative analysis of the microstructure and electrochemical behavior of platinum–carbon electrocatalysts containing 20 and 40% platinum from different manufacturers for fuel cells with a proton-exchange membrane is carried out. The degree of degradation of the catalysts during accelerated stress testing in laboratory conditions is assessed based on the results of not only residual functional characteristics, but also microstructural parameters after electrochemical tests. It is determined that 20 and 40% PM series catalysts contain smaller platinum nanoparticles, characterized by a narrower size and more uniform spatial distribution, compared to analogues of the HiSPEC series. Due to these microstructural features, a PM-series platinum–carbon catalysts are characterized by a higher electrochemically active surface area (EASA) and mass activity values initially and after stress testing.
期刊介绍：
Nanobiotechnology Reports publishes interdisciplinary research articles on fundamental aspects of the structure and properties of nanoscale objects and nanomaterials, polymeric and bioorganic molecules, and supramolecular and biohybrid complexes, as well as articles that discuss technologies for their preparation and processing, and practical implementation of products, devices, and nature-like systems based on them. The journal publishes original articles and reviews that meet the highest scientific quality standards in the following areas of science and technology studies: self-organizing structures and nanoassemblies; nanostructures, including nanotubes; functional and structural nanomaterials; polymeric, bioorganic, and hybrid nanomaterials; devices and products based on nanomaterials and nanotechnology; nanobiology and genetics, and omics technologies; nanobiomedicine and nanopharmaceutics; nanoelectronics and neuromorphic computing systems; neurocognitive systems and technologies; nanophotonics; natural science methods in a study of cultural heritage items; metrology, standardization, and monitoring in nanotechnology.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
